Monitoring ambrosia beetles with ethanol injected sentinel trees and ethanol baited bottle traps in ornamental nurseries

Ethanol-injected Magnolia virginiana were used to examine timing of attacks by Xylosandrus germanus in ornamental nurseries. The ethanol-injected trees were deployed in nurseries with ethanol-baited traps to determine if attacks on trees coincided with detection of activity by traps. In addition, traps were deployed with 1 or 2 commercially available low-release baits to evaluate sensitivity of traps relative to ethanol dose. Early detection of ambrosia beetle activity is important for timing control treatments to prevent damage.